Dry separator.



A. W. RINGLAND.

DRY SEPARATOR.

APPLICATION FILED AUG. 10, 1909.

968,984. 7, Patented Aug. 30, 1910.

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A. W. RINGLAND.

DRY SEPARATOB.

APPLICATION rmm man, 1909.

968,984. Patented Aug.30, 1910.

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ADAM WEIR RINGLAND, OF MCALESTER, OKLAHOMA.

DRY SEPARATOR.

Specification of Letters Patent.

Patented Aug. 30, 1910.

Application filed August 10, 1909. Serial No. 512,159.

To all whom it may concern:

Be it known that I, ADAM W. RINGLAND, a citizen of the United States, and a resident of McAlester, in the county of Pittsburg and State of Oklahoma, have invented a new and Improved Dry Separator, of which the following is a full, clear, and exact description.

The invention relates to separators for use in placer mining, and its objectis to provide a new and improved dry separator, arranged to insure a thorough separation of the gold from the sand or other extraneous matter in a very simple and effective manner.

The invention consists of novel features and parts and combinations of the same, which will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a sectional side elevation of the dry separator; Fig. 2 is a cross section of the same on the line 22 of Fig. 1; Fig. 3 is a face view of one of the collecting screens in open position, part of the filling being broken out; and Fig. 4 is an enlarged cross section of the same in closed position.

The material to be treated is passed from a table A into a hopper B, connected with the upper end of an inclined gravity screen C, forming the top of a chute D, mounted on a suitable framework E, supporting a storage chamber F and a suction chamber G containing or connected with a suction fan H, having its inlet H within the suction chamber G, so as to draw air from the same and force the air through the outlet I-I out of the suction chamber G. The gravity screen C and chute D are made tubular and preferably rectangular in cross section, and the gravity screen C is formed of alternating sections C, C joined in zigzag form, as plainly indicated in Fig. 1, the sections C being smooth and arranged at a lesser angle to the vertical than the sections G, each of which is provided with a screen bottom C and a top 0 of burlap or a like fabric material. Thus when the material passes down through the tubular sections C,

C it is screened in the section C and caused to turn over during its passage through the angular sections C, C so that a thorough screening of the material takes place, the screenings dropping into the chute D, which is provided with a discharge end D opening into the top of the storage chamber F.

The storage chamber F is provided with a hopper-shaped bottom F, containing retaining screens I, preferably of the construction illustrated in detail in Figs. 3 and 4, that is, each retaining screen is formed of two screen or perforate plates I and I connected together by hinges I and adapted to be fastened together at their free ends by suitable fastening devices I, a filling I of cotton batting or a similar loose material being placed between the plates I and I Now the gold readily settles in the loose material filling I and is retained by the same, and each retaining screen can be removed from time to time and opened for the removal of the filling I containing the gold. A clean filling I is then placed between the plates I, I the latter is thenclosed and returned to the hopper F for use in again collecting the gold dropping down with the material in the storage chamber F. Thelower end of the hopper bottom F is-provided with an outlet pipe F 2 for conducting the material not retained by the screens I to the outside of the storage chamber for further treatment by a cyanid process or the like.

The lower end'C of the gravity screen C discharges the coarse material between crushing or jig rolls J, to reduce the sand, gravel or other coarse materials to a fine state, the crushed material passing from the rolls J down a chute J into an air chamber K, separated by a partition K from the suction chamber G. In the partition K are arranged transversely-extending slots L, located one above the other and serving to establish communication between the cham-" bers K and G, so that air in the chamber K is caused to pass through the slots L by the suction action of the fan I-I connected with the suction chamber G. In the suction chamber G at the partition K and directly below' the slots L are arranged retaining screens N, similar in construction to the retaining screens I, shown in Figs. 3' and 4, and removably held in the hopper bottom F, as previously explained, it being however ui1 derstood that the retaining screens N are ineg clined downward from the slots L and their free. ends are supported by suitable ing means 0, from the top of the suction chamber G, as indicated in Fig. 1. Now the currents of air passing from the air chamber K into the suction chamber G by way of the slots L, carry along the light particles of the crushed material dropping down in the chamber K from the chute J, and as the said lighter particles contain flour gold, it is evident that such valuable particles pass into the suction chamber G and are liable to be retained by the screens N. The valuable particles not taken up by the loose material filling I in the screens N rolls down the screens onto tables P inclined in a reverse direction to the screens LT, so that the table receiving the material from the lower end of one screen delivers the material to the upper end of 'the next screen below, as will be readily understood by reference to Fig. 1.

The tables P are supported by suitable means Q from the top of the suction chamber G. The lowermost table P discharges into a bin R held in the suction chamber Gr.

Into the chute J discharges a chute D forming an extension of the lower end of the chute D and controlled by a valve D, so that some of the screened material not delivered by the discharge end D passes down the extension chute D into the chute J and down the same to finally drop in the air chamber K. Now as this screened material may contain light valuable particles, it is evident that such light particles are carried by the currents of air through the slots L into the suction chamber G, to be gathered therein on the screens F.

It is understood that the valve D is arranged in such a manner that the coarser screenings pass down the extension D while the finer screenings pass through the discharge end D into the upper portion of the storage chamber F.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent:

1. A dry separator, comprising an inclined gravity screen for separating the fine and coarse materials, a storage chamber for the reception of the fine materials, a crushing means for the coarse materials onto which discharges the lower end of the gravity screen, a suction chamber, retaining screens in the suction chamber, an air chamber having a slotted connection with the said suction chamber, and a chute discharging the crushed material into the air chamber, the air current carrying the light particles of the crushed material into the said suction chamber.

2. A dry separator, comprising a gravity screen for separating the fine and coarse materials, a storage chamber for the reception of the fine materials, the said storage chamber having a hopper shaped bottom, a crushing means for the coarse materials, a

suction chamber, an air chamber having a slotted connection wit-h the said suction chamber and into which passes the crushed material, the air current carrying the light particles of the crushed material into the said suction chamber, retaining means for the gold in the said suction chamber, and retaining screens in the hopper shaped bottom of the storage chamber.

8. A dry separator, comprising means for separating the fine and coarse materials, a storage chamber for the reception of the fine materials, a crushing means for the coarse materials, a suction chamber, an air chamber having a slotted connection with the said suction chamber and into which passes the crushed material, the air current carrying the light particles of the crushed material into the said suction chamber, retaining screens in the said storage chamber and retaining screens in the said suction chamber.

4. A dry separator, comprising an undulating gravity screen for separating the fine and coarse materials, a storage chamber for receiving the fine material from the said screen, a suction chamber, a pair of crushing rollers for crushing the coarse material received from the said screen, and an air chamber having a slotted connection with the said suction chamber and into which air chamber passes the crushed material from the said crushing rollers, the lighter particles in the crushed material being drawn into the suction chamber by the current of air passing from the air chamber into the suction chamber.

5. A dry separator, comprising an unclulating gravity screen for separating the fine and coarse materials, a storage chamber for receiving the fine material from the said screen, a suction chamber, a pair of crushing rollers for crushing the coarse material received from the said screen, an air chamber having a slotted connection with the said suction chamber and into which air chamber passes the crushed material from the said crushing rollers, the lighter particles in the crushed material being drawn into the suction chamber by the current of air passing from the air chamber into the suction chamber, a hopper retaining screen in the said storage chamber for the collection of the fine gold, and a series of retaining screens in the said suction chamber at the said slotted connections for receiving the lighter particles.

6. A dry separator, comprising an undulating gravity screen for separating the fine and coarse materials, a suction chamber, a pair of crushing rollers for crushing the coarse material received from the said screen, an air supply chamber having a slotted connection with the said suction chamber and into which air chamber passes the crushed material from the said crushing rollers, the lighter particles in the crushed material being drawn into the suction chamber by the current of air passing from the air supply chamber into the suction chamber, and a series of inclined retaining screens in the said suction chamber at the said slotted connections for receiving the lighter particles, the said inclined retaining screens being arranged one above the other, an upper screen discharging on the next lower one.

7. A dry separator, comprising a storage chamber, a suction chamber, an air chamber, the said suction and air chambers being connected with each other by slots for the air to pass from the air chamber into the suction chamber, a gravity screen made in sections joined in zigzag form, alternating sections being provided with a bottom screen and a fabric top, a chute under the said screen and having its discharge end opening into the top of the said storage chamber, a pair of crushing rolls onto which discharges the lower end of the said gravity screen, and a chute leading from the said crushing rolls into the upper end of the said air chamber.

8. A dry separator, comprising a storage chamber, a suction chamber, an air chamber, the said suction and air chambers being con nected with each other by slots for the air to pass from the air chamber into the suction chamber, a gravity screen made in sections joined in zigzag form, alternating sections being provided with a bottom screen and a fabric top, a chute under the said screen and having its discharge end opening into the top of the said storage chamber, a pair of crushing rolls onto which discharges the lower end of the said gravity screen, a chute leading from the said crushing rolls into the upper end of the said air chamber, retaining screens in the said storage chamber below the discharge end of the said gravity screen chute, and a series of inclined retaining screens in the said suction chamber under the said slots.

9. A dry separator, comprising a storage chamber, an air supply chamber, the said suction and air chambers being connected with each -other by slots for the air to pass from the air chamber into the suction chamber, a gravity screen made in sections joined in zigzag form, alternating sect-ions being provided with a bottom screen and a fabric top, a chute under the said screen and having its discharge end opening into the top of the said storage chamber, a pair of crushing rolls onto which discharges the lower end of the said gravity screen, a chute leading from the said crushing rolls into the upper end of the said air chamber, retaining screens in the said storage chamber below the discharge end of the said gravity screen chute, a series of inclined retaining screens in the said suction chamber under the said slots, and inclined tables for conducting the material from the lower end of one inclined retaining screen to the upper end of the next inclined retaining screen below.

10. A dry separator, comprising a storage chamber, a suction chamber, an air supply chamber, the said suction and air chambers being connected with each other by slots for the air to pass from the air chamber into the suction chamber, a gravity screen made in sections joined in zigzag form, alternating sections being provided with a bottom screen and a fabric top, a chute under the said screen and having its discharge end opening into the top of the said storage chamber, a pair of crushing rolls onto which discharges the lower end of the said gravity screen, a chute leading from the said crushing rolls into the upper end of the said air chamber, retaining screens in the said storage chamber below the discharge end of the said gravity screen chute, a series of inclined retaining screens in the said suction chamber under the said slots, inclined tables for conducting the material from the lower end of one inclined detaining screen to the upper end of the next inclined retaining screen below, and a bin in the said suction chamber into which discharges the lowermost table.

11. In a dry separator, a gravity screen made in tubular sections joined in zig-zag form, alternate sections being provided with a screen bottom, a chute under the said gravity screen, a storage chamber into which the discharge end of the chute opens, a crushing device onto which discharges the lower end of the gravity screen, a chamber into which the crushing device discharges, and a chute forming an extension of the chute under the gravity screen, and leading to said chamber.

12. A dry separator, comprising a gravity screen for separating the fine and coarse materials, a storage chamber, an air chamber, a suction chamber communicating with the air chamber, a chute under the said screen and having its discharge end opening into the storage chamber, a crushing device onto which discharges the lower end of the gravity screen, a chute leading from the crushing device into the air chamber, and a valve con trolled chute forming an extension of the chute under the gravity screen and discharging into the chute leading from the crushing device to the air chamber.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ADAM WEIR RINGLAND.

Vitnesses:

MORSE GARRETT, JANETTE GRADY. 

